In the second step of the sales register upload, you get to choose the tally voucher type you want GSTZen to upload. You may choose multiple or all vouchers in one go for upload into GSTZen if needed.
GSTZen will display the list of voucher types in the company you choose. Click on the checkbox next to Select if you would like to upload all voucher types. If you would like to choose specific voucher types, you may click on the individual vouchers you wish to upload
Once you choose the voucher types, GSTZen will list them under Selected Voucher types at the bottom. You may verify them and then click on Continue